The Contrast Low Osmolar is identified by number "1" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to B4001
Plain Radiography of Abdominal Aorta using Other Contrast
Plain Radiography of Abdominal Aorta using H Osm Contrast
Plain Radiography of Abdominal Aorta using L Osm Contrast